222856 has 16 divisors (see below), whose sum is σ = 423900. Its totient is φ = 109824.

The previous prime is 222841. The next prime is 222857. The reversal of 222856 is 658222.

It can be written as a sum of positive squares in 2 ways, for example, as 168100 + 54756 = 410^2 + 234^2 .

It is a plaindrome in base 16.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 222856.

It is not an unprimeable number, because it can be changed into a prime (222857) by changing a digit.

222856 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556 + ... + 868.

2²²²⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

222856 is a deficient number, since it is larger than the sum of its proper divisors (201044).

222856 is a wasteful number, since it uses less digits than its factorization.

222856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 404 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 222856 is about 472.0762650250. The cubic root of 222856 is about 60.6282143051.

The spelling of 222856 in words is "two hundred twenty-two thousand, eight hundred fifty-six".